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    Re: New ways to create false horizons?
    From: Pete Solon Palmer
    Date: 2017 Jul 22, 21:12 -0400
    Hi Don,

    << high precision rotary encoders (14 bits or more) >>

    Encoder (rotary & linear) is the term I was looking for.  It's amazing how if I use the right term in a search engine, then the info spills out.

    Just to throw up stupid ideas for everyone to knock down:  The rotary encoder seems to be rated by resolution per turn.  In the sextant we only need 1/4 turn so maybe we could gear it up 1:4 to increase the rez?   Cons would include the complication of gears and gear lash.  Linear encoder is lookin' good.  Maybe have a low rez solution for degrees and a higher rez for the minutes?

    << incremental optical or magnetic encoders along the scale  >>
    That's what I'm thinking.  Maybe something like a strut with a ball joint at each end.  Could be immune to rough seas?

    Regards,
    Pete

       
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